[mirror_ubuntu-zesty-kernel.git] / drivers / regulator / tps65086-regulator.c

/*
 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
 *
 * Author: Andrew F. Davis <afd@ti.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 * kind, whether expressed or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License version 2 for more details.
 *
 * Based on the TPS65912 driver
 */

#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>

#include <linux/mfd/tps65086.h>

enum tps65086_regulators { BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6, LDOA1,
	LDOA2, LDOA3, SWA1, SWB1, SWB2, VTT };

#define TPS65086_REGULATOR(_name, _of, _id, _nv, _vr, _vm, _er, _em, _lr, _dr, _dm)	\
	[_id] = {							\
		.desc = {						\
			.name			= _name,		\
			.of_match		= of_match_ptr(_of),	\
			.regulators_node	= "regulators",		\
			.of_parse_cb		= tps65086_of_parse_cb,	\
			.id			= _id,			\
			.ops			= &reg_ops,		\
			.n_voltages		= _nv,			\
			.type			= REGULATOR_VOLTAGE,	\
			.owner			= THIS_MODULE,		\
			.vsel_reg		= _vr,			\
			.vsel_mask		= _vm,			\
			.enable_reg		= _er,			\
			.enable_mask		= _em,			\
			.volt_table		= NULL,			\
			.linear_ranges		= _lr,			\
			.n_linear_ranges	= ARRAY_SIZE(_lr),	\
		},							\
		.decay_reg = _dr,					\
		.decay_mask = _dm,					\
	}

#define TPS65086_SWITCH(_name, _of, _id, _er, _em)			\
	[_id] = {							\
		.desc = {						\
			.name			= _name,		\
			.of_match		= of_match_ptr(_of),	\
			.regulators_node	= "regulators",		\
			.of_parse_cb		= tps65086_of_parse_cb,	\
			.id			= _id,			\
			.ops			= &switch_ops,		\
			.type			= REGULATOR_VOLTAGE,	\
			.owner			= THIS_MODULE,		\
			.enable_reg		= _er,			\
			.enable_mask		= _em,			\
		},							\
	}

struct tps65086_regulator {
	struct regulator_desc desc;
	unsigned int decay_reg;
	unsigned int decay_mask;
};

static const struct regulator_linear_range tps65086_10mv_ranges[] = {
	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
	REGULATOR_LINEAR_RANGE(410000, 0x1, 0x7F, 10000),
};

static const struct regulator_linear_range tps65086_buck126_25mv_ranges[] = {
	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
	REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x18, 0),
	REGULATOR_LINEAR_RANGE(1025000, 0x19, 0x7F, 25000),
};

static const struct regulator_linear_range tps65086_buck345_25mv_ranges[] = {
	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
	REGULATOR_LINEAR_RANGE(425000, 0x1, 0x7F, 25000),
};

static const struct regulator_linear_range tps65086_ldoa1_ranges[] = {
	REGULATOR_LINEAR_RANGE(1350000, 0x0, 0x0, 0),
	REGULATOR_LINEAR_RANGE(1500000, 0x1, 0x7, 100000),
	REGULATOR_LINEAR_RANGE(2300000, 0x8, 0xA, 100000),
	REGULATOR_LINEAR_RANGE(2700000, 0xB, 0xD, 150000),
	REGULATOR_LINEAR_RANGE(3300000, 0xE, 0xE, 0),
};

static const struct regulator_linear_range tps65086_ldoa23_ranges[] = {
	REGULATOR_LINEAR_RANGE(700000, 0x0, 0xD, 50000),
	REGULATOR_LINEAR_RANGE(1400000, 0xE, 0xF, 100000),
};

/* Operations permitted on regulators */
static struct regulator_ops reg_ops = {
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.is_enabled		= regulator_is_enabled_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.map_voltage		= regulator_map_voltage_linear_range,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
};

/* Operations permitted on load switches */
static struct regulator_ops switch_ops = {
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.is_enabled		= regulator_is_enabled_regmap,
};

static int tps65086_of_parse_cb(struct device_node *dev,
				const struct regulator_desc *desc,
				struct regulator_config *config);

static struct tps65086_regulator regulators[] = {
	TPS65086_REGULATOR("BUCK1", "buck1", BUCK1, 0x80, TPS65086_BUCK1CTRL,
			   BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(0),
			   tps65086_10mv_ranges, TPS65086_BUCK1CTRL,
			   BIT(0)),
	TPS65086_REGULATOR("BUCK2", "buck2", BUCK2, 0x80, TPS65086_BUCK2CTRL,
			   BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(1),
			   tps65086_10mv_ranges, TPS65086_BUCK2CTRL,
			   BIT(0)),
	TPS65086_REGULATOR("BUCK3", "buck3", BUCK3, 0x80, TPS65086_BUCK3VID,
			   BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(2),
			   tps65086_10mv_ranges, TPS65086_BUCK3DECAY,
			   BIT(0)),
	TPS65086_REGULATOR("BUCK4", "buck4", BUCK4, 0x80, TPS65086_BUCK4VID,
			   BUCK_VID_MASK, TPS65086_BUCK4CTRL, BIT(0),
			   tps65086_10mv_ranges, TPS65086_BUCK4VID,
			   BIT(0)),
	TPS65086_REGULATOR("BUCK5", "buck5", BUCK5, 0x80, TPS65086_BUCK5VID,
			   BUCK_VID_MASK, TPS65086_BUCK5CTRL, BIT(0),
			   tps65086_10mv_ranges, TPS65086_BUCK5CTRL,
			   BIT(0)),
	TPS65086_REGULATOR("BUCK6", "buck6", BUCK6, 0x80, TPS65086_BUCK6VID,
			   BUCK_VID_MASK, TPS65086_BUCK6CTRL, BIT(0),
			   tps65086_10mv_ranges, TPS65086_BUCK6CTRL,
			   BIT(0)),
	TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1, 0xF, TPS65086_LDOA1CTRL,
			   VDOA1_VID_MASK, TPS65086_LDOA1CTRL, BIT(0),
			   tps65086_ldoa1_ranges, 0, 0),
	TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2, 0x10, TPS65086_LDOA2VID,
			   VDOA23_VID_MASK, TPS65086_LDOA2CTRL, BIT(0),
			   tps65086_ldoa23_ranges, 0, 0),
	TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3, 0x10, TPS65086_LDOA3VID,
			   VDOA23_VID_MASK, TPS65086_LDOA3CTRL, BIT(0),
			   tps65086_ldoa23_ranges, 0, 0),
	TPS65086_SWITCH("SWA1", "swa1", SWA1, TPS65086_SWVTT_EN, BIT(5)),
	TPS65086_SWITCH("SWB1", "swa2", SWB1, TPS65086_SWVTT_EN, BIT(6)),
	TPS65086_SWITCH("SWB2", "swa3", SWB2, TPS65086_SWVTT_EN, BIT(7)),
	TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
};

static int tps65086_of_parse_cb(struct device_node *dev,
				const struct regulator_desc *desc,
				struct regulator_config *config)
{
	int ret;

	/* Check for 25mV step mode */
	if (of_property_read_bool(config->of_node, "ti,regulator-step-size-25mv")) {
		switch (desc->id) {
		case BUCK1:
		case BUCK2:
		case BUCK6:
			regulators[desc->id].desc.linear_ranges =
				tps65086_buck126_25mv_ranges;
			regulators[desc->id].desc.n_linear_ranges =
				ARRAY_SIZE(tps65086_buck126_25mv_ranges);
			break;
		case BUCK3:
		case BUCK4:
		case BUCK5:
			regulators[desc->id].desc.linear_ranges =
				tps65086_buck345_25mv_ranges;
			regulators[desc->id].desc.n_linear_ranges =
				ARRAY_SIZE(tps65086_buck345_25mv_ranges);
			break;
		default:
			dev_warn(config->dev, "25mV step mode only valid for BUCK regulators\n");
		}
	}

	/* Check for decay mode */
	if (desc->id <= BUCK6 && of_property_read_bool(config->of_node, "ti,regulator-decay")) {
		ret = regmap_write_bits(config->regmap,
					regulators[desc->id].decay_reg,
					regulators[desc->id].decay_mask,
					regulators[desc->id].decay_mask);
		if (ret) {
			dev_err(config->dev, "Error setting decay\n");
			return ret;
		}
	}

	return 0;
}

static int tps65086_regulator_probe(struct platform_device *pdev)
{
	struct tps65086 *tps = dev_get_drvdata(pdev->dev.parent);
	struct regulator_config config = { };
	struct regulator_dev *rdev;
	int i;

	platform_set_drvdata(pdev, tps);

	config.dev = &pdev->dev;
	config.dev->of_node = tps->dev->of_node;
	config.driver_data = tps;
	config.regmap = tps->regmap;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
		rdev = devm_regulator_register(&pdev->dev, &regulators[i].desc,
					       &config);
		if (IS_ERR(rdev)) {
			dev_err(tps->dev, "failed to register %s regulator\n",
				pdev->name);
			return PTR_ERR(rdev);
		}
	}

	return 0;
}

static const struct platform_device_id tps65086_regulator_id_table[] = {
	{ "tps65086-regulator", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, tps65086_regulator_id_table);

static struct platform_driver tps65086_regulator_driver = {
	.driver = {
		.name = "tps65086-regulator",
	},
	.probe = tps65086_regulator_probe,
	.id_table = tps65086_regulator_id_table,
};
module_platform_driver(tps65086_regulator_driver);

MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
MODULE_DESCRIPTION("TPS65086 Regulator driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
d2a2e729 AD	1	/*
	2	* Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
	3	*
	4	* Author: Andrew F. Davis <afd@ti.com>
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	* This program is distributed "as is" WITHOUT ANY WARRANTY of any
	11	* kind, whether expressed or implied; without even the implied warranty
	12	* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License version 2 for more details.
	14	*
	15	* Based on the TPS65912 driver
	16	*/
	17
	18	#include <linux/module.h>
7f9354f2	19	#include <linux/of.h>
d2a2e729 AD	20	#include <linux/platform_device.h>
d2a2e729 AD	21	#include <linux/regulator/driver.h>
d2a2e729 AD	22
	23	#include <linux/mfd/tps65086.h>
	24
	25	enum tps65086_regulators { BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6, LDOA1,
	26	LDOA2, LDOA3, SWA1, SWB1, SWB2, VTT };
	27
	28	#define TPS65086_REGULATOR(_name, _of, _id, _nv, _vr, _vm, _er, _em, _lr, _dr, _dm) \
	29	[_id] = { \
	30	.desc = { \
	31	.name = _name, \
	32	.of_match = of_match_ptr(_of), \
7f9354f2	33	.regulators_node = "regulators", \
d2a2e729 AD	34	.of_parse_cb = tps65086_of_parse_cb, \
	35	.id = _id, \
	36	.ops = &reg_ops, \
	37	.n_voltages = _nv, \
	38	.type = REGULATOR_VOLTAGE, \
	39	.owner = THIS_MODULE, \
	40	.vsel_reg = _vr, \
	41	.vsel_mask = _vm, \
	42	.enable_reg = _er, \
	43	.enable_mask = _em, \
	44	.volt_table = NULL, \
	45	.linear_ranges = _lr, \
	46	.n_linear_ranges = ARRAY_SIZE(_lr), \
	47	}, \
	48	.decay_reg = _dr, \
	49	.decay_mask = _dm, \
	50	}
	51
	52	#define TPS65086_SWITCH(_name, _of, _id, _er, _em) \
	53	[_id] = { \
	54	.desc = { \
	55	.name = _name, \
	56	.of_match = of_match_ptr(_of), \
7f9354f2	57	.regulators_node = "regulators", \
d2a2e729 AD	58	.of_parse_cb = tps65086_of_parse_cb, \
	59	.id = _id, \
	60	.ops = &switch_ops, \
	61	.type = REGULATOR_VOLTAGE, \
	62	.owner = THIS_MODULE, \
	63	.enable_reg = _er, \
	64	.enable_mask = _em, \
	65	}, \
	66	}
	67
	68	struct tps65086_regulator {
	69	struct regulator_desc desc;
	70	unsigned int decay_reg;
	71	unsigned int decay_mask;
	72	};
	73
d8ca5bd1	74	static const struct regulator_linear_range tps65086_10mv_ranges[] = {
d2a2e729 AD	75	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
	76	REGULATOR_LINEAR_RANGE(410000, 0x1, 0x7F, 10000),
	77	};
	78
	79	static const struct regulator_linear_range tps65086_buck126_25mv_ranges[] = {
f8192880 AD	80	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
f8192880 AD	81	REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x18, 0),
d2a2e729 AD	82	REGULATOR_LINEAR_RANGE(1025000, 0x19, 0x7F, 25000),
	83	};
	84
d8ca5bd1	85	static const struct regulator_linear_range tps65086_buck345_25mv_ranges[] = {
d2a2e729 AD	86	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
	87	REGULATOR_LINEAR_RANGE(425000, 0x1, 0x7F, 25000),
	88	};
	89
	90	static const struct regulator_linear_range tps65086_ldoa1_ranges[] = {
	91	REGULATOR_LINEAR_RANGE(1350000, 0x0, 0x0, 0),
	92	REGULATOR_LINEAR_RANGE(1500000, 0x1, 0x7, 100000),
	93	REGULATOR_LINEAR_RANGE(2300000, 0x8, 0xA, 100000),
	94	REGULATOR_LINEAR_RANGE(2700000, 0xB, 0xD, 150000),
	95	REGULATOR_LINEAR_RANGE(3300000, 0xE, 0xE, 0),
	96	};
	97
	98	static const struct regulator_linear_range tps65086_ldoa23_ranges[] = {
	99	REGULATOR_LINEAR_RANGE(700000, 0x0, 0xD, 50000),
	100	REGULATOR_LINEAR_RANGE(1400000, 0xE, 0xF, 100000),
	101	};
	102
	103	/* Operations permitted on regulators */
	104	static struct regulator_ops reg_ops = {
	105	.enable = regulator_enable_regmap,
	106	.disable = regulator_disable_regmap,
	107	.is_enabled = regulator_is_enabled_regmap,
	108	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	109	.map_voltage = regulator_map_voltage_linear_range,
	110	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	111	.list_voltage = regulator_list_voltage_linear_range,
	112	};
	113
	114	/* Operations permitted on load switches */
	115	static struct regulator_ops switch_ops = {
	116	.enable = regulator_enable_regmap,
	117	.disable = regulator_disable_regmap,
	118	.is_enabled = regulator_is_enabled_regmap,
	119	};
	120
	121	static int tps65086_of_parse_cb(struct device_node *dev,
	122	const struct regulator_desc *desc,
	123	struct regulator_config *config);
	124
	125	static struct tps65086_regulator regulators[] = {
	126	TPS65086_REGULATOR("BUCK1", "buck1", BUCK1, 0x80, TPS65086_BUCK1CTRL,
	127	BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(0),
d8ca5bd1	128	tps65086_10mv_ranges, TPS65086_BUCK1CTRL,
d2a2e729 AD	129	BIT(0)),
	130	TPS65086_REGULATOR("BUCK2", "buck2", BUCK2, 0x80, TPS65086_BUCK2CTRL,
	131	BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(1),
d8ca5bd1	132	tps65086_10mv_ranges, TPS65086_BUCK2CTRL,
d2a2e729 AD	133	BIT(0)),
	134	TPS65086_REGULATOR("BUCK3", "buck3", BUCK3, 0x80, TPS65086_BUCK3VID,
	135	BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(2),
d8ca5bd1	136	tps65086_10mv_ranges, TPS65086_BUCK3DECAY,
d2a2e729 AD	137	BIT(0)),
	138	TPS65086_REGULATOR("BUCK4", "buck4", BUCK4, 0x80, TPS65086_BUCK4VID,
	139	BUCK_VID_MASK, TPS65086_BUCK4CTRL, BIT(0),
d8ca5bd1	140	tps65086_10mv_ranges, TPS65086_BUCK4VID,
d2a2e729 AD	141	BIT(0)),
	142	TPS65086_REGULATOR("BUCK5", "buck5", BUCK5, 0x80, TPS65086_BUCK5VID,
	143	BUCK_VID_MASK, TPS65086_BUCK5CTRL, BIT(0),
d8ca5bd1	144	tps65086_10mv_ranges, TPS65086_BUCK5CTRL,
d2a2e729 AD	145	BIT(0)),
	146	TPS65086_REGULATOR("BUCK6", "buck6", BUCK6, 0x80, TPS65086_BUCK6VID,
	147	BUCK_VID_MASK, TPS65086_BUCK6CTRL, BIT(0),
d8ca5bd1	148	tps65086_10mv_ranges, TPS65086_BUCK6CTRL,
d2a2e729 AD	149	BIT(0)),
	150	TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1, 0xF, TPS65086_LDOA1CTRL,
	151	VDOA1_VID_MASK, TPS65086_LDOA1CTRL, BIT(0),
	152	tps65086_ldoa1_ranges, 0, 0),
	153	TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2, 0x10, TPS65086_LDOA2VID,
	154	VDOA23_VID_MASK, TPS65086_LDOA2CTRL, BIT(0),
	155	tps65086_ldoa23_ranges, 0, 0),
	156	TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3, 0x10, TPS65086_LDOA3VID,
	157	VDOA23_VID_MASK, TPS65086_LDOA3CTRL, BIT(0),
	158	tps65086_ldoa23_ranges, 0, 0),
	159	TPS65086_SWITCH("SWA1", "swa1", SWA1, TPS65086_SWVTT_EN, BIT(5)),
	160	TPS65086_SWITCH("SWB1", "swa2", SWB1, TPS65086_SWVTT_EN, BIT(6)),
	161	TPS65086_SWITCH("SWB2", "swa3", SWB2, TPS65086_SWVTT_EN, BIT(7)),
	162	TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
	163	};
	164
d2a2e729 AD	165	static int tps65086_of_parse_cb(struct device_node *dev,
	166	const struct regulator_desc *desc,
	167	struct regulator_config *config)
	168	{
	169	int ret;
	170
	171	/* Check for 25mV step mode */
d8ca5bd1 AD	172	if (of_property_read_bool(config->of_node, "ti,regulator-step-size-25mv")) {
	173	switch (desc->id) {
	174	case BUCK1:
	175	case BUCK2:
	176	case BUCK6:
	177	regulators[desc->id].desc.linear_ranges =
d2a2e729	178	tps65086_buck126_25mv_ranges;
d8ca5bd1	179	regulators[desc->id].desc.n_linear_ranges =
d2a2e729	180	ARRAY_SIZE(tps65086_buck126_25mv_ranges);
d8ca5bd1 AD	181	break;
	182	case BUCK3:
	183	case BUCK4:
	184	case BUCK5:
	185	regulators[desc->id].desc.linear_ranges =
	186	tps65086_buck345_25mv_ranges;
	187	regulators[desc->id].desc.n_linear_ranges =
	188	ARRAY_SIZE(tps65086_buck345_25mv_ranges);
	189	break;
	190	default:
	191	dev_warn(config->dev, "25mV step mode only valid for BUCK regulators\n");
	192	}
d2a2e729 AD	193	}
	194
	195	/* Check for decay mode */
	196	if (desc->id <= BUCK6 && of_property_read_bool(config->of_node, "ti,regulator-decay")) {
	197	ret = regmap_write_bits(config->regmap,
	198	regulators[desc->id].decay_reg,
	199	regulators[desc->id].decay_mask,
	200	regulators[desc->id].decay_mask);
	201	if (ret) {
	202	dev_err(config->dev, "Error setting decay\n");
	203	return ret;
	204	}
	205	}
	206
	207	return 0;
	208	}
	209
	210	static int tps65086_regulator_probe(struct platform_device *pdev)
	211	{
	212	struct tps65086 *tps = dev_get_drvdata(pdev->dev.parent);
	213	struct regulator_config config = { };
	214	struct regulator_dev *rdev;
	215	int i;
	216
	217	platform_set_drvdata(pdev, tps);
	218
	219	config.dev = &pdev->dev;
7f9354f2	220	config.dev->of_node = tps->dev->of_node;
d2a2e729	221	config.driver_data = tps;
d2a2e729 AD	222	config.regmap = tps->regmap;
	223
	224	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
	225	rdev = devm_regulator_register(&pdev->dev, &regulators[i].desc,
	226	&config);
	227	if (IS_ERR(rdev)) {
	228	dev_err(tps->dev, "failed to register %s regulator\n",
	229	pdev->name);
	230	return PTR_ERR(rdev);
	231	}
	232	}
	233
	234	return 0;
	235	}
	236
	237	static const struct platform_device_id tps65086_regulator_id_table[] = {
	238	{ "tps65086-regulator", },
	239	{ /* sentinel */ }
	240	};
	241	MODULE_DEVICE_TABLE(platform, tps65086_regulator_id_table);
	242
	243	static struct platform_driver tps65086_regulator_driver = {
	244	.driver = {
	245	.name = "tps65086-regulator",
	246	},
	247	.probe = tps65086_regulator_probe,
	248	.id_table = tps65086_regulator_id_table,
	249	};
	250	module_platform_driver(tps65086_regulator_driver);
	251
	252	MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
	253	MODULE_DESCRIPTION("TPS65086 Regulator driver");
	254	MODULE_LICENSE("GPL v2");